How to lubricate a tiller?
For the Craftsman 917291491 front-tine tiller, routine lubrication mainly means keeping the engine properly oiled; the transmission is sealed and does not need lubrication unless it’s being serviced. Use the oil type and service intervals in the owner's manual.
- Engine crankcase oil: Check before starting and after every 5 hours of continuous use; add oil as needed.
- Engine oil changes: Change oil every 50 hours of operation or at least once a year.
- Transmission: Sealed; no lubrication required during normal maintenance.
- Control and moving points: Keep linkages and pivots clean; apply a light lubricant only if they bind (avoid getting oil on belts/pulleys).
- Park the tiller on a level surface and let the engine cool enough to handle safely.
- Check oil level at the filler plug; top off with SAE 30 motor oil (or equivalent) when temperatures are above 32°F.
- To change oil (every 50 hours or yearly): warm oil drains faster, remove the drain plug, tip the tiller forward to drain into a container, reinstall the drain plug, then refill through the oil filler opening.
| Task | When to do it | What you need |
|---|---|---|
| Check engine oil level | Before starting; after each 5 hours of continuous use | SAE 30 oil (above 32°F) |
| Change engine oil | Every 50 hours or at least yearly | Drain pan, SAE 30 oil |
| Transmission lubrication | Not required (sealed) | None |
| Spark plug replacement | Each season or every 50 hours | Correct plug type and gap (see manual) |
Proper lubrication prevents premature wear, overheating, and hard starting. Over-oiling the wrong areas can cause belt slip and poor tine performance, so focusing on engine oil and keeping the transmission sealed is the safest approach.
Last updated: February 2026
What would cause a tiller to not start?
For your Craftsman 917291491 front-tine tiller, a no-start is usually caused by a fuel issue (empty, stale, or water-contaminated fuel), incorrect choke/throttle settings, or an ignition problem such as a loose spark plug wire or a bad plug. Use the owner's manual troubleshooting chart to match symptoms to the fastest checks.
- Confirm the fuel tank has fresh fuel (old fuel is a top cause after storage).
- Set the choke correctly for a cold start; if the engine is warm, reduce choke.
- Verify the throttle control is set properly for starting.
- Inspect the spark plug wire; push it firmly onto the plug.
- Check the air cleaner; a dirty air cleaner can prevent starting.
- If you smell strong fuel, the engine may be flooded; wait a few minutes, then try again with less choke.
| Likely cause | What you’ll notice | What to do next |
|---|---|---|
| Out of fuel, stale fuel, or water in fuel | No sputter, or starts then dies | Drain/refill with fresh fuel; keep fuel clean and sealed |
| Not choked properly | Won’t fire when cold | Use full choke for cold start, then open gradually |
| Dirty air cleaner | Hard starting, black smoke | Clean or replace the air cleaner element |
| Loose spark plug wire or bad plug/gap | No ignition “kick” | Reseat wire; inspect/replace plug and set proper gap |
| Carburetor out of adjustment | Starts only with choke, surges | Follow adjustment guidance in the manual |
Repeated no-start attempts can flood the engine and foul the spark plug, turning a simple fuel or choke issue into a longer troubleshooting session. Starting with the basic fuel, choke, and spark checks saves time and prevents unnecessary parts replacement.
Last updated: February 2026
Does Craftsman make tillers?
Yes. Craftsman makes tillers, including front-tine models like the Craftsman 917291491. Our owner's manual for model 917291491 identifies it as a front tine tiller with a 5.0 HP engine and a 24-inch tine width, which helps you match operating instructions and replacement parts.
Craftsman-branded tillers use model-specific parts and service procedures. For the 917291491, the most common needs are wear items and drive or control hardware.
- Use the full model number 917291491 when selecting parts
- Follow the maintenance schedule to reduce starting and tilling problems
- Replace worn wear items on schedule (tines, belts, spark plug, air filter)
- Keep fasteners tight to prevent vibration and poor tilling performance
- Adjust the depth stake for soil conditions; start shallow in hard soil
| Spec | Craftsman 917291491 |
|---|---|
| Tiller type | Front tine tiller |
| Engine | 5.0 HP |
| Tine width | 24 inches |
| Gas capacity | 3 quarts (unleaded regular) |
| Engine oil | SAE 30 above 32°F; SAE 5W-30 below 32°F (20 oz.) |
| Spark plug | Champion RC12YC; gap 0.030 in |
Craftsman produced multiple tiller designs over the years. Confirming the exact model and specs ensures you choose the correct parts and set up the tiller properly for safe handling and good soil penetration.
Last updated: February 2026



